As we head towards the end of 2021, we bring you some of the best episodes of the year. Today: Extraordinary scientific advances have taken place both because of Covid and despite it. We bring you three tales of human ingenuity you might have missed – and, for a change, nothing but good news. This podcast was brought to you thanks to the support of readers of The Times and The Sunday Times. Subscribe today and get one month free at: thetimes.co.uk/storiesofourtimes. This episode was first published in April 2021.Host: David Aaronovitch. Guests: - Tom Whipple, science editor, The Times. - Lindley Johnson, planetary defence officer, Nasa. - Dr Elena Adams, DART systems engineer, Johns Hopkins University. Clips: ITV, CBC, BBC, TRT World, SpaceX. See acast.com/privacy for privacy and opt-out information.